CSS3 Social Sign-in Buttons

Standard Buttons

To create the default sign-in button, add a class of btn-auth and btn-[service] (where [service] is one of the supported social sign-in services) to any appropriate element (most likely an anchor).

<a class="btn-auth btn-[service]" href="#">
    Sign in with <b>[service]</b>
</a>

Larger buttons

To create larger buttons include an additional class of large.

<a class="btn-auth btn-[service] large" href="#">
    Sign in with <b>[service]</b>
</a>

Supported services

• Facebook
• GitHub
• Google
• OpenID
• Twitter
• Windows Live ID
• Yahoo!

Source code

Available on GitHub: necolas/css3-social-signin-buttons

Download it in either zip or tar formats.

Clone the project with Git by running:
$ git clone git://github.com/necolas/css3-social-signin-buttons.git

Browser compatibility

Full support: Google Chrome, Firefox 3.5+, Safari 4+, IE 10+, Opera 11.10+.

Note: Some CSS3 enhancements are not supported in older versions of Opera and IE. The use of icons is not supported in IE 6 or IE 7.

License

Public domain: http://unlicense.org/